The drive has returned indicating to the server that it needs to be cleaned.
The server marks the drive to be cleaned. If the drive is enabled for server-managed cleaning, and a cleaner cartridge is checked into the library, the server will load the cleaner into the drive after the current volume is dismounted. See the DEFINE DRIVE and QUERY DRIVE commands for information on enabling server-managed cleaning. See the CHECKIN LIBVOL command for checking a cleaner into the library.
None.